Measuring apparatus



" Nov." s 15523.

O. J. DORWI N MEASURING APPARATUS Filed Aul. 16 1920 2 Sheets-Sheet 1 l wzmb I IMMIH Faterired Nov. 6, i923.

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Application filed An-gust 16, 1920. Serial 170.1403376. i t

To @ZZ 1071.011?, t may concern.' Y

Be it known that I, Oris J. DoiiwiN, citizen ot the United States, and resident o'f the borough or' Manhattan, city of New York, in the county of New York and State or' New York, have invented certain new and useiul -linproveinents in a Measuring Apparatus, ot' which the following is a speciification. Y

This invention-relates to a measuring ap-g to a point on a line and from one corner to another. Y

The accompanying drawings represent an exemplificartion of thev rotometer, of which Fig. 1 is an outside front elevation; Fig. 2 shows an end View of the rotoineter with a portion broken away', Fig. 3V represents a front View of the rotoineterV with some of its parts oinitted'an'd portions of its dial plate broken away; Fig. 4 isa section on the line 4C. 4 of Fig. 1; Fig. 5 shows anV enlarged sec-l tion on theline 5 of Fig. 1; Fig. G'repie sents a 'fragmentary portion of Fig. 3 on an enlarged scale; Fig. 6a indicates a section of Fig. 6 on the line 6a, 6a, Fig. 6b shows an ele- V ration ot a detail; Fig. 6C represents a top plan View of Fig. 6b.; Fig. 7 shows a diagram exenipliyingthe principle of one of' the features of theapparatus and Fig.Y 8 Vshows a diagrammatic View ofthe apparatus and the method o'tf'measuring wall from corner 'to corner.

The casing A of the iotonieteris shownV with the rear wall 2O having the Arim 21, the latter being turned over to forni'athin-'lange 21a'with the curved rolling edge 22. The riiii 21 has niarkedthereon a scale 23 with twelve iii-ain divisions.V Each. of the main divisions. although on a largerA scale vin the drawings, represents one inch. Y Each oi the main divisions inA this'instance is ldividedl into eight subdivisions representing each one eighth of au inch. `An arrow 26 is also iii-Y` diated on the riin 21. A pin`28 extendslip from .the iii-side of the rear wall 20.

spindle lor pivot-:30 has formed therewith the disc tia-nge 31, whichlatteris'a-sfV Vwithv the flange 341A is journaledoii the pivot -lOhaiing'th'e threaded end 35. Rivets Ytened to the reai wall 20 of the casing A byl ieans 'of the rirets A journal ,bearing 36 fasten Ythe flange 34 to thedia-l plate 37 i and a washer 38 is interposed between the lower edge of the bearing 33 and the innerf tace of the wall k2G. vLo'clr'nuts Ll0 are inV threaded engagement wit-hthe threaded endj oi' the piif'ot 30. 'inthe dialplate 37 are t.

'formed threeY openings for YtheV insertion of the similar journal bearings' L13, ed and that have each extending therefrom thel flange p These Vianges bear :upon the'k dial plate '37 and are fastened thereto byV means of Ithe rivets 47. Similarpivot's or journal pins 18, 4519 and 50 each V'respectively with the? threaded portions 51,52, 53 at one end and the similar knurled heads 55, 56 and 57 at the other are respectively journaled in the A cupfshaped bearings 4.3, Vtat and 4:5. I counter 6() with numerals O to 9 von its face and the similar teeth 61 at 'its lowerV circuintei'ential portion is fastened tothe threaded Y portion 510ie the pivot 48 by means-of the lock nuts 62.

uppei` portion of the counter 60.,

A disc counter y68 w'th the numerals O to 9 onY its upper tace is supported -on the threaded portion 52 of the "journal pin49 and is held in place by the lock nuts 69. Indentationsz'70 are formed in the, circumferential edge ofthe disc counter which can mesh with the tooth 63. A. supplemental A Asupplemental tooth 63j longer than the .teeth '61 extends from-the tooth 72 extends from andbelowthe'lower face of the dise'counter 68 'and itspath when the latter is turning clearsY the'teeth t1l and the `tooth A cupshaped counter 74 withA thenuineials() to 9701i its upper face sup4` ported on theV threadedportionY of: the Q i journal piu 50 and is locked in placeby'fthef Y lock nuts 7 5.- An annular flange 76 with# indentations 77`eXtends from the lowerpore tion oi the counter 74. V.Theindentations 77 can niesh with .the tooth 72. A clainpiug' bracket 'T8 is supported ontlie dial plate 37 and has clamped therein the operatinghan#v dieV 7 9. z A' pointer SOfi's indicated i on thei dial plate 37. Three openings 82, 83 and '84 are vformed in the dial plate 37" and are re-`Vv spectively located in the paths Aof the i'iu' i' I- l1() nierals of the counters 60, 68 and 74.-

On the dial 37 is also indicated the wordv feet, and the words units, tens andhundreds,

which latter are respectively adjacent toV the openings 82, 83 and 84.

Radial corner indicating lines 9 1 and 95 o are indicated on the dial 37;

In thecasing A there are formed ratchet teeth 100. On the dial plate 37 is pivoted by means of a pivot 101, a pawl with the arms 102 and 103. Y An adjusting pin 105 exvtendspfroni the arni 10B-and passes through y ered. A spring latch 110 has oneend fast fend enga-ges the teeth b1..y

be. turned in opposite directions.

point of the arrow 26 on the rim 21, is

point of the pointer enedjto a pin 111 extending from the lower 'face of the plate The spring latch. 110 has a depression 112 which'normally doesv,not lool; with the adjusting pin 105.

springll has one end fastened to the lower face of the dial plate 37 and its other end is fastened to the arm 103. rIhe spring: 115 maintains the-arm 102 in cont-act with the ratchet teeth 100. ihen the pawl is located as indicated in Fig. jthe vrim 21 ma)rv turn in the directionof the arrows WT thereby avoiding running the casing A in the wrong.

direction. If forany special reason the casing Aj is to be run in the opposite direction,

the arm 102 is raised and disengaged from the ratchet teeth and the locking pin locked with the depression 112 ofV the spring latch 110. To maintain counters 60,

", 68 and Tet in proper operative position springs, 115, 116 and 117 are providedv to coact with them. The spring 115 has one end fastened to a pin 120 extending from the bottom face of the dial plate 37 and its other The spring` 11G has one end fastened to a pin 123 extending;y from the bottom faceof the dia-l plate 3T and its other end engages the indentations 70 of the counter 68. The spring 11T `has one end fastened to a pin 124 extending from the bottom face of the dial plate 3T and its other end engages Ithe indentations 77 of the counter 74.

To use the rotonieter, the zero of each ot the counters 60, 68 and 74 is respectively brought into registryv with the openings 82, 83 and Se by turning them knurled heads 55,56 and 57. The teeth and indentations of the counters permit them to Next the breuellt Opposite the onV thedial plate 87. Y

The rotometer. is then .brought into con- ;tact w-ith the surface -to be measured, if

there no corner, with the Zero division of the scale` on the rim 21-over the starting` pointas indicated bythe arrow S. They rollingedgeg ofthe. casing A is. then rolled on the' Slllfaee TE in they directies .et arrow- V by means of theV which turns the casing iny the direction of the arrow W. Y The' dial plate 37 is prevented rotating` while the casing A is rolling on the surface T by reason of the handle 'l' 9 beingrclainped by the bracket 7S. llfith the turning of the casing EL, .they arrow 26 is caused to travel inthe direction of `the arrow WT.' The pin 28 engages one of the teeth G1 of the counter' 60, and mores it in a counter clockwise direction an amount equal to the distance between a pair of teeth for each revolution of the casing A. Y For eachrefolution of the rotoineter a new number will be shown through the openings 82. Each number indicates one foot` of linear travel for they casing A on the sur,- face T. .Before the end of thel revolution ofy the counter 50, the tooth 63 thereof engages one of the indentations 70 of the disc counter GS and vwhen the counter 60 has completed its revolution the disc counter 68 has been turned in a clockwise direction the distance between two of its indentations and the numeral 1 is indicated through the open`V 887 showing that the casing A has trai'- eled. 10 feet. Before the counter 68 has completed a revolution, its tooth 72 has engaged one of the indentations 77 of thecounter Til and when the counter GS has completed its revolution the numeral 1 will `be indicated through the opening 84 indieating that the casingr has traveled one hundred feet.V The inches .andl fractions of inches will be indicated by read-ing the scale on the rim 21'with reference to the pointer 80. Upon the further traveling` of the casing' A the operations described are repeated.

Referring to Fig. 7 the length of the cii-` cuniference of the rolling edge 22 in this instance is equal to 12 inches and the circum-- ferentiallength of aquadrant of said edge equals 3, and one half of the length of the quadrant equals 1lL inches. rlhe diameter of the rolling` edge 22 equals 3.8198 inches and its radius equals 1.9099 inches. To measure the distance A 7) with the edge 22 it mustV travel approximately 1.9 inches or l/ 10 of'a-n inch more than the circumferential lcngthof The arrow 26' or Zero line A lC extending` vfrom' the center ofthe Y rotometer to the cor-ner A. The rotometer is thenro-lled vwith the edge 22 on the wall' Ar from A to. Buntil it bears against the.`

wall B 1F andthe indicating line95 is made'tls'gt imams to coincide with dia oiial line BG, by rotating the dial plate 3x bymeans of the handle 79. Y I

The distance .between .the Y Walls. isy then read by means of the pointer 80 and the scalel 23 and the numerals on the dials indicated through the OpeningsS2, S3' and 84e. Y* (Fig' l.) In case the distance from the corner A is to be measured to a point on the Wall A B beforeA the wall B Fjis -reached the location of the pointer 8O is brought in contact with the point on the Wall 1A B,"the distance ot' which from the corner A Will therebv be shown on thescale of the rotoinete'r. n Y that Athe length of the It will be noted arc h b extending from the point b which is the point ot' tangency ot the rolling edge 22 with the wall A Band the point la, which is the intersection Vot' aradial line from the center C ofthe rotometer through the pointer 8O and the edge 22 is equal to the vdistance A I). The vlines 9a and 95 serve to locate the pointer 80, tobe enabled to measure the distance rotoineter from the corners of the VWall. Various modications may be made in the invention Without departing trom the spirit thereof, and the present exempliiicfation is to be taken as illustrative of the inventionand not limitative thereof. Y

Having described my invention what I desire to secure by Letters Patent and claim is 1. In a measuring apparatus the combination of a casing having a curved circuma Jerential ro-lling edge With a scale, a pivot in the axial center ofthe casing and fastened thereto, a journal bearing journaled on the pivot, a dial plate With a pointer extending from the journal bearing, counters meshing with each other rotatively carried on the dia-1 plate and a pin eXtending from the -casing coacting With one o said counters. n

2. In a measuring apparatus the combination of a casing having a circumferential rolling edge formed therewitlua pivot eX- tending from the casing, a dial plate with a pointer liournaled on the pivot, a cup-shapedV counter With teeth on its lower edge vand a supplemental tooth at its upper portion jouinalcd Von the dial plate, a pin in the casing coacting with the teeth ofthe counter at its lower portion, a disc counter V-vith indeiitatioiis and a supplemental tooth iouinaled on the dial plato, the indentatioiis co-Y acting with the supplemental tooth ot the first counter, atliird counter also cup-shaped and having anv annular flange with indentations at its lower portion journaled kon the dial plate, the indentations of the latter counter' coacting with tooth of the second counter land means vto maintain the dial plate at rest While the casing is rolling. Y

S. In a measuring apparatusl the combina the said dial plate having cornerindicating from the point ot tangency ot they 'one `ot' the counters,'said dial plate having a scale for thecasing, said tion of a dial plate, a casing the supplemental i inglthe rotation of the casing, counters to indicate the distance traveled by the casing,

lines thereon-to adapt themeasuring device to vmeasure from a cornercat one end of-an object to-,be measured to aV second coiiier ot: the object.' Y

Y i. In a measuring -apparatusthel combination of a kcasing with a scale thereon and its outer circumferentialv portionturned over to orm. afcurved rolling. edge, a kdial plate having yopenings journaled Within thecasing and having a pointer indicated thereon,

-a plurality of counters journaledon the dial plate'v co-acting with each other, thev saidV y counters having numeralsV visible through the openings inthe Vdial plate,.a pin in the Y casing co-acting With one of the counters and means to prevent the dial plate rotating. While the casing is rolling. Y 1 f In a measuringv apparatus the combination of a casing with a rolling edge and a scale, a dial Vplate journaled in the casing, having a pointer, counters adapted to turn in oppositeV directions journaled on the dial plate and coacting with each other and a pin extending from the casing coacting with means to locate it in the proper position ivith respect to the scale of the casing to enable the apparatus to measure a distance from a corner. Y

V6. In a measuring apparatus the combi- 190 nation'ot' a casing having a scale, Va dial" plate journaled Within the casing and having a pointer indicated thereon coactingVv with the scale of the casing, a plurality ofV counters journaled on the dial plate coacting witheach other, and adapted to function in one direction and in av direction opposite thereto to enable the apparatus to measure in reverse directions, a pin in the casing coacting with oneY of the counters and means to prevent the dial plate rotating `While the casing is'rolling. Y

7. In a measuringV apparatus the combination of a Vdial plate, a casing rotatably connected to the dial plate,l and a rim with rim ,having a pointer and an indicating line`r said line en-l abling the apparatus toiiieasure Jrroni a corner by directing said line'tovtalie the' direction ot va line bisecting the corner.

S. In a measuring apparatus the combinarotatably connected to the dial plate',v said dialpla-te hav-Y ing a pointer and ak pair of indicating lines,

iio

said linesenab-ling the apparatus to measure 175 f Y lonf the dial plataneV hasbbeen.y rolledfwfrom the? iirstfcornerto `the A.

second;@ornerr f 9. lnls a: measuring apparatusithe combination of a casinghavingange with a lcurved rolhngedge, said flangehavinga scale indicated thereon,a pivot extending from thevcasinglg a dial Vlate with a pointer journaled on the pivot7 counters havingiteeth adapted to mesh with each other journaled y'in-g with said counters. i

l0.' In a measuring apparatus theaconlbination'oi' zi'caslng. having' a. flange -With u curved f rollin g1 edge, :sa-idf` flange; haring. a.:

scale Yindicated thereon. a Jivotfextendino i 1 r3 i "from `the casing; ratchet `teethA formed with f the'- Casing a dial plate@With.V a3 pointer journaled on the pivot,` countersfharing teeth adapted to eaeh otherl-'journaledon'theidial plate,v apin extending-.from the Casngvfcoacting With-the teethllof 'one ot 'said counters,

apawl Witha pair offarins with' onefafrni pin extending from theV casing coactingfwith the teeth ofone of said tot, the dialr'plate remets thereof enabledfto; coactywith'said ratchet teethriand. awepringglateh to kde'taehahljy lock with the other arm of the pawl. v

11. In a measuring'apparatns the co1nbi- 30 nationfof 'alcasinghavinga lange With ai curved Srollin'g edge, said Hange havinga a; scale indicatedr thereon, a `pivot extending fromtho casing-, ratchet teethhforrned With i theieasing, adialplate/With a pointer jour- `35 naledon-the pivot,lcounters having teeth adapted to mesh with each other journaled onithefdial.; plate, aypin extending from thev casingfcoaetingwith; the teeth of one of said' Counters,l eipawlwith a .pair o arms With/10 one7 arm thereof normally engaging Said ratchet teeth-ay slgiringebearingagainst said; pawl to Inormally inaintainit in :Contact with the :ratchetfteethnand1 a spring latch inthe path ,of. saidfpzuvl; to,v lockther'eWith and,45

znazin'teiir it: disengagedifronr said ratchet teeth.. y

Signediat'the heron-gh of Manhattan, city of NewffYor-lgz ,in-thencountyY of L New York Y andy State. ot: Yew:y Align-stik D. 1990.

Y OTISfl J. DORWIN;

York this; 6th dayr` of 5p 

